I often switch between ~6" 2560px phone screen and ~7" 1920px one, and the later clearly can display more information at the same level of readability than the

I often switch between ~6" 2560px phone screen and ~7" 1920px one, and the later clearly can display more information at the same level of readability than the former. Same with 15" 4k hi quality laptop screen vs 40" 4k display. So in the only metric that matters, hidpi appears to be irrelevant. The only thing that I find to matter is the angular size of the display at a distance, that doesn't make your eyes strain. (as a dev)